I have a question on the nextion screen

1

I made a timer and when I set the times it works fine, but there is one problem
When I turn off the screen, the timer setting disappears, and I have to set the timer every time I unplug the power.
Is there a way to save the data?
Note that the data are just numbers

2

repo and wepo. See the Nextion instructions.

3

repo & wepo for store data in eeprom or you can use FileStream component to store data to SD cart. In first case you need Enhanced/Intelligent varstion of screen, in last Intelligent